WO2019106825A1

WO2019106825A1 - Banding and packaging device

Info

Publication number: WO2019106825A1
Application number: PCT/JP2017/043273
Authority: WO
Inventors: 昭範石塚; 哲哉岸本; 賢一柴尾
Original assignee: 大阪シーリング印刷株式会社
Priority date: 2017-12-01
Filing date: 2017-12-01
Publication date: 2019-06-06
Also published as: KR102413292B1; AU2017441328B2; EP3718908A1; CN111356642B; KR20200066719A; JPWO2019106825A1; JP7080538B2; CA3084008C; US20200346797A1; CA3084008A1; US11542046B2; EP3718908A4; CN111356642A; AU2017441328A1

Abstract

The present invention is provided with: a relay mechanism (1C) that is disposed between an article carry-in mechanism (1A) transporting an article (w) to a packaging processing position (P) and an article carry-out mechanism (1B) carrying out the article (w) from the packaging processing position (P), and that receives and supports the transported article (w) from below, and relays the article (w), wherein the relay mechanism (1C) receives and supports the article (w) in a center section in the width direction.

Description

Band-wrapping device

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a banding and wrapping apparatus for winding and sticking a band-shaped film piece around an article.

For example, as disclosed in

Patent Documents

1 and 2, as the above-mentioned strapping and packaging apparatus, a strip-shaped film piece gripped by a film piece transport mechanism and transported to a predetermined position is released onto the article by releasing the grip. The present application is configured to feed the article and a film piece placed on the article by the loading belt and the upper transport belt of the article transport device, and then transport the article to the packaging processing position by holding the article and the film piece above and below. It has been proposed by people.

In the strapping and packaging apparatus of Patent Document 1, as shown in the schematic side view of FIG. 24, the packaging processing position P is set between the end of the carry-in belt 10 and the beginning of the carry-out belt 11. . When an article w on which a piece of film (not shown) is placed is nipped by the loading belt 10 and the upper transport belt 12 up and down and transported to the packaging processing position P, as shown by the arrow A, The conveyance by the unloading belt 11 and the upper conveyance belt 12 is stopped.

Above the packaging processing position P, as shown in the schematic front view of FIG. 25, a film piece pressing mechanism having a pair of pressing members 42 for pressing down the left and right protruding portions of the film piece f downward is provided There is. Further, below the packaging processing position P, a film piece sticking mechanism having a pair of sticking members 62 movable to the left and right is provided.

With respect to the article w stopped at the packaging processing position P between the end of the loading belt 10 and the start end of the unloading belt 11, the left and right pressing members 42 are lowered, as shown in FIG. Both end portions of the film piece f protruding outward from the left and right are pushed downward and pushed down along the both side surfaces of the article w.

Next, as shown in FIG. 27, the left and right sticking members 62 move horizontally to the sticking action position where the sticking members 62 enter below the article w. Thus, the film piece f hanging downward from the article w is pushed by the attaching member 62 and wound around the bottom surface of the article w, and the glued portions at both ends of the film piece elastically press the bottom surface of the article w. It is done and stuck.

When the winding and sticking of the film piece f is completed, the conveyance by the carry-out belt 11 and the upper conveyance belt 12 is started, and the banded packaged article w is carried out.

As described above, the film piece f is placed in the state where the article w on which the film piece f is placed straddles the end of the carry-in belt 10 and the start end of the carry-out belt 11, that is, the both sides and the bottom of the article w Since both end portions of f are pressed downward and both ends of the pressed film piece f are pressed against the bottom surface of the article w and stuck, banding and packaging can be performed efficiently.

JP, 2015-74467, A JP, 2015-85955, A

In the above-described strapping and packaging apparatus, the upper transport belt 12 is required to vertically convey the article w and the film piece f supplied thereon and to the packaging processing position P, and the equipment cost is high. I had no choice.

Therefore, it is conceivable to omit the upper transport belt 12, but if the upper transport belt 12 is removed, the article w can not be transported by being pinched at the top and bottom. When it reaches the end and the start end of the delivery belt 11, the horizontal state can not be maintained and the tip of the article w falls into the gap between the two

belts

10 and 11 and can not be conveyed.

In the article w having a short length along the transport direction, the portion placed on the end of the carry-in belt 10 and the start end of the carry-out belt 11 becomes short at the packaging processing position P, If the belt 12 is not present, the article w may slip on the

belts

10 and 11 and can not be unloaded from the packaging processing position P even if the loading belt 10 and the unloading belt 11 are driven after the packaging processing is completed.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a banding packaging apparatus which can smoothly carry an article without clamping the article vertically and can perform stable banding packaging. I assume.

In order to achieve the above object, the present invention is configured as follows.

(1) The strapping and packaging apparatus according to the present invention includes an article loading mechanism for transporting an article toward a packaging processing position, and a film strip transport for transporting a strip of film strip onto the article at the packaging processing position. A mechanism, a film piece pressing mechanism for pressing the film piece transported on the article against the article at the packaging processing position, and pressing down both end portions of the film piece, and both ends of the film piece pressed down A film piece affixing mechanism for winding and sticking a part on the bottom surface of the article; an article carry-out mechanism for carrying out the article with the film piece wound and stuck thereon from the packaging processing position; And a relay mechanism for receiving and supporting the articles transported from below and relaying them between the mechanism and the article unloading mechanism, and the packaging processing position is the article loading mechanism Said article is set between the unloading mechanism, the relay mechanism, the article receiving support in the central portion in the width direction perpendicular to the conveying direction of the article.

According to the strapping packaging apparatus of the present invention, the film piece transport mechanism transports the strip-shaped film piece onto the article carried into the packaging processing position by the article loading mechanism. Next, the film piece transported on the article is pressed against the article by the film piece pressing mechanism, and both end portions of the film piece are pushed down, and both ends of the film piece pushed down are made by the film piece attaching mechanism. Wrap around the bottom of the article and stick it. When strapping is completed, the articles are unloaded from the packaging processing position by the article unloading mechanism.

Between the article loading mechanism and the article unloading mechanism, which is the packaging processing position, the article to be conveyed is supported from below by the relay mechanism, so the article is not vertically held and conveyed as in the prior art. Even if the leading end of the article transported by the article loading mechanism falls into the gap between the article loading mechanism and the article unloading mechanism, transfer to the article unloading mechanism is smoothly performed. As a result, banding and packaging by the film piece pressing mechanism and the film piece sticking mechanism are performed at the packaging processing position between the article loading mechanism and the article unloading mechanism.

Further, the relay mechanism between the article loading mechanism and the article unloading mechanism receives and supports the article from below at the central portion in the width direction of the article, that is, the article at the central portion in the width direction of the bottom surface thereof. Since the support is received, the space other than below the central portion in the width direction of the bottom surface of the article can be an open space. Using this space, the film piece is pressed onto the article by the film piece pressing mechanism, the film pieces are pushed down at both end portions, and the film piece pushed down by the film piece sticking mechanism is pressed to the bottom of the article. Each operation of the winding and sticking can be smoothly performed without being interrupted by the relay mechanism.

(2) In a preferred embodiment of the present invention, the relay mechanism includes a relay belt conveyor for transporting the articles, and the relay belt conveyor is narrow in width to support the central portion in the width direction. It has a conveyor belt.

According to this embodiment, since the articles can be transported by the relay belt conveyor, the relay belt conveyor wraps the package between the article loading mechanism and the article unloading mechanism even if the length of the article along the transport direction is short. It is possible to smoothly carry in to the processing position or smoothly carry out of the packaging processing position.

In addition, since the conveyor belt of the relay belt conveyor is a narrow belt that receives and supports the central portion in the width direction of the bottom surface of the article, both side portions in the width direction of the bottom surface of the article at the packaging processing position It is exposed. Therefore, the film piece attaching mechanism does not disturb the operation when winding and attaching both ends of the film piece around both sides in the width direction of the bottom surface of the article.

(3) In another embodiment of the present invention, the article delivery mechanism includes a delivery belt conveyor, and the relay belt conveyor is configured such that the narrow conveying belt is a pulley of the delivery belt conveyor. It is wound around and driven by the unloading belt conveyor.

According to this embodiment, since the relay belt conveyor of the relay mechanism is driven by the unloading belt conveyor of the article unloading mechanism, a dedicated drive mechanism for driving the relay belt conveyor is not necessary, and the structure is simplified. be able to.

In this embodiment, since the conveyor belt of the relay belt conveyor is wound around the pulley of the conveyor belt conveyor, there is no gap between the relay belt conveyor and the conveyor belt conveyor in the direction of conveyance. It is continuous.

The article is not flat at its bottom surface, and for example, has a downwardly projecting ridge extending along the width direction of the article. According to this embodiment, since there is no gap between the relay belt conveyor and the unloading belt conveyor, the ridge portion of the bottom surface of the conveyed article is between the relay belt conveyor and the unloading belt conveyor. It is transported smoothly without being stuck in the gap.

(4) In still another embodiment of the present invention, the article loading mechanism includes a loading belt conveyor, and between the loading belt conveyor and the relay belt conveyor, the articles are placed from below. A support plate is provided for receiving and supporting.

According to this embodiment, since the support plate for receiving and supporting the article from below is provided between the loading belt conveyor and the relay belt conveyor, even the article having the ridge portion on the bottom surface The projection supported by the support plate can prevent the projection on the bottom surface of the article from being fitted into the gap between the loading belt conveyor and the relay belt conveyor.

(5) In one embodiment of the present invention, the film piece pressing mechanism presses the film piece against the upper surface of the article under its own weight, and the film piece pressed against the upper surface of the article by the upper surface pressing member. And a side pressing member for pressing down both end portions along both sides of the article.

According to this embodiment, the film piece transported on the article is first lightly pressed against the upper surface of the article by its own weight of the upper surface pressing member, and is placed along the upper surface of the article without waving. Then, both end portions of the film piece pressed against the upper surface of the article are pushed down by the side pressing members along the both sides of the article. In this case, even if the height of the article changes, there is no change in the pressing force by the upper surface pressing member that descends by its own weight, and the pressing force does not become excessive or insufficient.

(6) In a preferred embodiment of the present invention, the film piece pressing mechanism includes a support bracket that moves up and down, the side pressing member is connected and fixed to the support bracket, and the upper pressing member is the support. The upper pressing member is supported by the bracket so as to be vertically movable by its own weight, and the upper pressing member approaches the upper surface of the article prior to the side pressing member as the support bracket is lowered.

According to this embodiment, the upper surface pressing member can be made to act on the upper surface of the article simply by raising and lowering a single support bracket, and then the side pressure members can be made to act along both sides of the article, both The drive structure is simplified as compared to the case of separately driving.

(7) In another embodiment of the present invention, the upper surface pressing member of the film piece pressing mechanism presses the film piece to both sides in the width direction of the upper surface of the article.

The conveyor belt of the relay belt conveyor is a narrow belt that supports and conveys the central portion of the bottom surface of the article. For this reason, the articles received and supported by the transport belt have unstable balance in the width direction. However, according to this embodiment, since the upper surface pressing member of the film piece pressing mechanism presses the article from above through the film piece on both sides in the width direction of the article, the article has a central portion of the bottom surface and the upper surface. It becomes a support state by three places of the both sides of the cross direction, and can maintain the posture stably.

According to the present invention, since the article relay mechanism for relaying the article is provided between the article carry-in mechanism and the article carry-out mechanism, the article carry-in can be performed without holding the article vertically and conveying as in the conventional case. The transfer to the article unloading mechanism is smoothly performed without the leading end of the article transported by the mechanism falling into the gap between the article loading mechanism and the article unloading mechanism.

In addition, since the relay mechanism receives and supports the central portion in the width direction of the bottom surface of the article from below, pressing the film piece against the article using a space other than the central portion of the bottom surface of the article It is possible to smoothly perform the operations of pushing down both end side portions of the film piece and winding and sticking the pushed-down film piece to the bottom surface of the article.

FIG. 1 is a side view of a strapping packaging apparatus according to an embodiment of the present invention. FIG. 2 is a schematic plan view of the strapping packaging apparatus of FIG. FIG. 3 is a plan view of the article loading mechanism in the article transport mechanism of FIG. FIG. 4 is a side view showing a relay mechanism in the article transport mechanism of FIG. FIG. 5 is a plan view showing the relay mechanism in the article transport mechanism of FIG. FIG. 6 is a side view showing the film piece forming part and the film piece transport mechanism of FIG. FIG. 7 is a rear view of the film piece transport mechanism of FIG. FIG. 8 is a cross-sectional plan view showing the film piece forming portion and the film piece transport mechanism of FIG. FIG. 9 is a front view of the film piece pressing mechanism of FIG. FIG. 10 is a side view of the film piece pressing mechanism of FIG. FIG. 11 is a plan view of the film piece pressing mechanism of FIG. FIG. 12 is a front view of the film piece affixing mechanism of FIG. FIG. 13 is a plan view showing a part of a drive structure in the film piece affixing mechanism of FIG. FIG. 14 is a perspective view of the film piece affixing mechanism of FIG. FIG. 15 is a front view showing a banding and packaging process. FIG. 16 is a front view showing a banding and packaging process. FIG. 17 is a front view showing a banding and packaging process. FIG. 18 is a front view showing a banding and packaging process. FIG. 19 is a front view showing a banding and packaging process. FIG. 20 is a front view showing a banding and packaging process. FIG. 21 is a front view showing a banding and packaging process. FIG. 22 is a perspective view of the band-wrapped article. FIG. 23 is a schematic side view showing a relay mechanism of another embodiment. FIG. 24 is a side view showing the conveyance of the article of the conventional strapping apparatus. FIG. 25 is a front view showing a strapping process of the prior art. FIG. 26 is a front view showing a strapping process of the prior art. FIG. 27 is a front view showing a strapping process of the prior art.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of a strapping packaging apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic plan view thereof.

The band-wrapping packaging apparatus of this embodiment band-wraps an article w such as a lidded pack container containing food etc., for example.

The strapping and packaging apparatus includes an article transport mechanism 1 for placing an article w and transporting the article w along a horizontal transport path shown by arrow A in FIG. 2 and a packaging processing position set in the middle of the article transport path. An article positioning mechanism 2 for positioning and holding an article w conveyed at P, a film supply unit 3 for feeding out and feeding a continuous wide original film F, and a printing processing unit for printing the supplied original film F 4 and a film piece forming portion 5 for cutting the printing processed original film F at a constant pitch to form a strip-like film piece f described later, and holding the position of the formed film piece f at the packaging processing position P The film piece transport mechanism 6 for supplying on top of the article w and the left and right center part of the film piece f fed on top of the article w are pressed against the upper surface of the article w, and both end side parts of the film piece f are downward Push to A film piece pressing mechanism 7 for folding the film w along both side surfaces of the article w, and a film piece sticking mechanism 8 for winding and sticking both ends of the folded film piece f around the bottom surface of the article w There is.

In the following description, for the sake of convenience, the upper side in the transport direction A of the article w (left in FIGS. 1 and 2) is forward, the lower side in the transport direction A (right in FIGS. 1 and 2) is backward, the transport direction The direction orthogonal to A and horizontal is referred to as the left and right direction.

The article conveying mechanism 1 horizontally conveys the article w placed on the article w and horizontally conveyed to the rear packaging processing position P, and the article w subjected to the banding and packaging processing at the packaging processing position P backward And an article delivery mechanism 1B. In the article transport mechanism 1, the article carry-in path and the article carry-out path are in a straight line.

The article loading mechanism 1A includes a loading belt conveyor formed by winding a wide transport belt 12 across a motor driven rear drive pulley 10 and a front driven pulley 11. The article carry-out mechanism 1B includes a carry-out belt conveyor in which a wide conveying belt 15 is wound around a motor driven rear drive pulley 13 and a front driven pulley 14.

The end of the belt conveyor of the article loading mechanism 1A and the beginning of the belt conveyor of the article unloading mechanism 1B are opposed at a distance larger than the front-rear width of the film piece f, and the packaging processing position P is set at this distance. At the packaging processing position P, banding and packaging processing is performed on the article w.

In this embodiment, the article transport mechanism 1 is disposed between the article carry-in mechanism 1A and the article carry-out mechanism 1B so that the article w can be smoothly transported without being held up and down and stable banding packaging can be performed. The relay mechanism 1C is provided.

FIG. 4 is a side view showing the relay mechanism 1C, and FIG. 5 is a plan view thereof.

The relay mechanism 1C of this embodiment uses the driven pulley 14 of the article delivery mechanism 1B as a drive pulley, and wraps a narrow convey belt 18 around the front driven pulley 16 and the lower tension pulley 17 with a three-point tension Equipped with a relay belt conveyor.

Here, the transport belts 15 of the article delivery mechanism 1B are divided at the left and right centers, and the left and right split belts are respectively engaged with the guide grooves 14a of the driven pulley 14 and positioned in the left-right direction. Thus, a predetermined small space is formed between the left and right divided belts. The narrow conveyance belt 18 of the relay mechanism 1C is wound around the driven pulley 14 at a small distance between the left and right centers. The conveyance belt 18 of the relay mechanism 1C is engaged with the guide groove 14b of the driven pulley 14, the guide groove 16a of the driven pulley 16, and the guide groove 17a of the tension pulley 17 and positioned left and right.

As described above, the narrow conveyor belts 18 of the relay mechanism 1C are provided at the left and right centers, and receive and support the right and left center portions of the bottom surface of the workpiece w from below. The outer peripheral surface of the transport belt 18 supporting the bottom surface of the article w is flat on the left and right, and the flat outer peripheral surface supports the article w.

The width N1 of the narrow conveying belt 18 is determined by using the distance L1 between the two ends of the film piece f in a state of being wound around the work w, as shown in the front view showing the strapping and packing process of FIG. It can be defined as follows.
(The width N1 of the conveying belt 18) ≦ (the distance L1 between the two ends of the film piece f in the state of being wound around the work w)
If the maximum width of the width N1 of the transport belt 18 is the distance L1 between the two ends of the film piece f in the state of being wound around the work w, the film f is removed by the “film piece sticking mechanism” of the present invention. At the bottom of the article w, the portion on which the film piece f is not wound can be supported by the transport belt 18 when pasting on the belt.

Alternatively, the width N1 of the transport belt 18 can be defined as follows by using the distance L1 and the diameter D1 of the roll-shaped sticking member 81 shown in FIG.

(The width N1 of the transport belt 18) ≦ (the distance L1 between the two ends of the film piece f in the state of being wound around the work w) − (the diameter D1 of the bonding member 81)
The “film piece sticking mechanism” of the present invention includes a pair of roll-like sticking members 81 as in the present embodiment, and the diameter of each sticking member 81 is D1. In this case, in a state where each bonding member 81 is in contact with both ends of the film piece f wound around the bottom surface of the article w, each bonding member 81 has a radius (D1) from both ends of the film piece f. / 2) A total of the diameter (D1) is taken out to the inner region where the film piece f is not wound.

The width of the inner region where the film piece f is not wound is the distance L1 between the two ends of the film piece f in the state of being wound on the work w, so the maximum width N1 of the transport belt 18 is the distance A distance obtained by subtracting the diameter (D1) of the bonding member 81 from L1, that is, (a distance L1 between both ends of the film piece f in a state of being wound on the work w)-(diameter D1 of the bonding member 81) .

By defining in this manner, when each sticking member 81 wraps and sticks the film piece f on the bottom surface of the article w, each sticking member 81 moves to both ends of the film piece f, respectively. Also, the transport belt 18 supporting the work w does not get in the way.

The width N1 of the transport belt 18 is preferably as wide as possible from the viewpoint of supporting the work w, but the distance between both ends of the wide film piece f in the left and right, and therefore the film piece f in a state wound around the work w It is preferable that L1 correspond to the small film piece f as much as possible. Therefore, the upper limit of the width N1 of the transport belt 18 is preferably 10 mm, and more preferably 8 mm.

The lower limit value of the width N1 of the transport belt 18 is preferably 5 mm, more preferably 6 mm, from the viewpoint of supporting the work w.

Therefore, the width N1 of the transport belt 18 is preferably 10 to 5 mm, more preferably 8 to 6 mm.

As described above, the conveyor belt 18 of the relay belt conveyor of the relay mechanism 1C is wound around the driven pulley 14 of the belt conveyor for unloading the article unloading mechanism 1B as a driving pulley. Is driven by a conveyor belt for unloading.

As a result, the drive mechanism dedicated to the relay mechanism 1C becomes unnecessary, and the structure can be simplified accordingly.

The article w may not have a flat bottom surface, and may have, for example, a downwardly projecting ridge extending along the width direction of the article w, that is, the left-right direction. In an article w having a projection on such a bottom surface, when the front conveyance belt transfers to the rear conveyance belt, the projection engages with the gap between the two belts for smooth conveyance. There are times when you can not.

In this embodiment, since the conveyance belt 18 of the relay mechanism 1C is wound around the driven pulley 14 of the article unloading mechanism 1B, the conveyance belt 18 of the relay mechanism 1C and the conveyance belt 15 of the article unloading mechanism 1B are back and forth It will be continuous in the direction.

As a result, even with the article w having the ridges, the ridges of the article w can be smoothly transported without being fitted into the gap between the front and rear transport belts.

On the other hand, there is a gap as shown in FIG. 4 between the end of the conveyance belt 12 of the article loading mechanism 1A and the start end of the conveyance belt 18 of the relay mechanism 1C. , 18 is a fixed support plate 19 that receives and supports the article w from below. As shown in FIG. 5, the support plate 19 is located above the end of the conveyance belt 12 of the article loading mechanism 1A and extends in the left-right direction, and the start end of the conveyance belt 18 of the relay mechanism 1C is A pair of support pieces 19a extending rearward are formed so as to be sandwiched from both sides. By the support plate 19, the transport belt 12 of the article loading mechanism 1A and the transport belt 18 of the relay mechanism 1C are continuous in the front-rear direction.

As a result, even if the article w has downwardly projecting ridges extending leftward and rightward on the bottom surface, the ridges of the article w do not fit into the gap between the front and

rear conveyance belts

12 and 18. , Will be transported smoothly.

The end of the transport belt 12 is at the packaging processing position P between the end of the transport belt 12 of the article carry-in mechanism 1A and the start end of the transport belt 15 of the article carry-out mechanism 1B. The portion resting on the top and the start end of the transport belt 15 is shortened.

With such an article w having a short front-rear length, if the relay mechanism 1C is not present, the article w slips on the

belts

12, 15 even if the

conveyor belts

12, 15 are driven after the packaging process is completed. Although it may not be possible to carry out the processing position P, in the present embodiment, the article w can be reliably carried out by the relay belt conveyor of the relay mechanism 1C.

As shown in FIG. 3, conveyance guides 21 a and 21 b for guiding the article w from the left and right are disposed on the carrying-in belt conveyor of the article loading mechanism 1 </ b> A. The left and right conveyance guides 21a and 21b are connected to and supported by

movable frames

24a and 24b which can be slid to the left and right along the front and rear guide shafts 23, which are horizontally supported across the left and right fixed frames 22. Further, the operation shaft 25 horizontally supported over the left and right fixed frames 22 is provided with a left screw shaft 25a and a right screw shaft 25b whose lead angles are opposite to each other. The

movable frames

24a and 24b are screwed through the left screw shaft 25a and the right screw shaft 25b, respectively. Holding the handle 25a provided on one end side in the left-right direction, the operating shaft 25 is rotated in forward and reverse directions, and the left and right

movable frames

24a and 24b are screwed and moved in opposite directions, thereby conveying the transport guides 21a and 21b. , Can move close to each other or move away from each other according to the width of the article w.

The conveyance guides 21a and 21b and the

movable frames

24a and 24b are divided in the front and back in the rear part of the conveyance path. In this divided gap portion, a check stopper 28 is disposed in the conveyance path formed between the left and right conveyance guides 21a and 21b. In addition, an actuator 27 such as an air cylinder for driving the check stopper 28 in and out is mounted on the divided movable frames 24a 'and 24b' at the rear. The check stopper 28 is used to hold the following articles w on standby while the preceding articles w are subjected to the band wrapping process at the rear packaging process position P.

As shown in FIG. 1, the film piece pressing mechanism 7 is located above the packaging processing position P between the end of the article loading mechanism 1A and the beginning of the article unloading mechanism 1B, and below the packaging processing position P. , And the film piece sticking mechanism 8 are respectively provided.

As shown in FIG. 10, the article positioning mechanism 2 is mounted on the rear portion of a drive case 60 in the film piece pressing mechanism 7 described later. The article positioning mechanism 2 is provided with a positioning stopper 30 which is driven up and down by an actuator 29 such as an air cylinder above the article unloading mechanism 1B.

The positioning stopper 30 extends horizontally forward from the connection base with the actuator 29, and the front end for receiving the article w is bent downward. The positioning stopper 30 descends and enters the article conveying path, thereby receiving the leading end of the article w conveyed to the packaging processing position P in the conveyance direction, and restricting the article w in the back and forth direction. Hold position. Further, the positioning stopper 30 ascends and separates from the article conveyance path, thereby allowing the article w to move rearward.

The actuator 29 for moving the positioning stopper 30 up and down is supported so as to be movable back and forth along the upper and lower guide shafts 31, and is screwed with a screw shaft 32 supported horizontally in the front and rear direction. Further, the screw shaft 32 is interlocked with a bevel gear by an operation shaft 33 supported horizontally to the left and right. By turning the operation handle 33a on the front of the apparatus shown in the plan view of FIG. 11 to turn the operation shaft 33 forward and backward, the actuator 29 can be screwed forward and backward. As a result, the positioning stopper 30 is positionally adjusted back and forth corresponding to the front and back length of the article w so that the front and back central portion of the positioned article w coincides with the packaging processing position P.

As shown in FIGS. 1 and 2, in the film supply unit 3, a roll support shaft 35 for horizontally and horizontally supporting the original fabric roll R is disposed in a horizontal cantilevered state. An original film F fed from an original roll R is guided to the print processing unit 4 along a predetermined traveling path. In addition, above original film supply part 3, reserve original fabric roll R 'can be stored now.

Although the detailed structure is not shown, a thermal printer is installed in the print processing unit 4. By means of this thermal printer, various types of information previously input and set, such as the type of contents stored in the article w, materials used, expiration date, commodity price, bar code, etc., are provided at predetermined positions on the upper surface of the raw film F It is designed to be printed at a constant pitch in the direction.

As shown in FIGS. 6 and 8, in the film piece forming portion 5, two

feed rollers

36a and 36b driven by a motor are supported horizontally and horizontally in two rows in the front and back, and each feed roller Above the

rollers

36a and 36b, the

pressing rollers

37a and 37b are disposed so as to be freely rotatable. In the film piece forming unit 5, the original film F is sandwiched and conveyed from above and below by the

feed rollers

36a and 36b and the

pressing rollers

37a and 37b. Further, as shown in FIG. 6, the film transport path in the film piece forming portion 5 is inclined rearward and downward in a side view.

Below the middle of the front and

rear feed rollers

36a and 36b, a cutter 38 wider than the original film F is disposed so as to be movable up and down by an actuator 39 such as an air cylinder. As the cutter 38 ascends beyond the film traveling path, the raw film F nipped from above and below at the two front and rear portions is cut at the middle between the front and rear nipping portions so that a strip of film piece f is formed. It has become.

In the raw film F, perforations m (see FIG. 8) for cutting are formed at a pitch corresponding to the front-rear width of the film piece f. An optical sensor or the like detects that the perforation m is positioned just above the cutter 38 which has retreated below the film traveling path, and stops the film feeding by the

feed rollers

36a and 36b. Thereafter, the film position detection, the feed roller drive control, and the cutter elevation control are interlocked so that the cutter 38 is raised to execute the film cutting process.

If the peripheral speed of the feed roller 36b behind the front feed roller 36a is set to be slightly higher than that of the front feed roller 36a, the film portion between the front and rear rollers on which the cutter 38 acts is appropriately tensioned. By this, the film cutting by pushing up the cutter can be accurately performed.

In addition, on the film delivery side of the film piece forming portion 5, a receiving plate 40 for supporting the film piece f which has been cut and formed and delivered in a downward inclined posture is mounted and supported in the same inclined posture is disposed. There is. The receiving plate 40 is formed to have a horizontal width shorter than the left and right length of the film piece f, and is supported in a state where both ends of the fed film piece f are laterally protruded from the receiving plate 40.

6 to 8 show the detailed structure of the film piece transport mechanism 6.

The film piece transport mechanism 6 is mounted on and supported by a frame plate 41 erected on the side of the article transport path. The film piece transport mechanism 6 has a pivoting member 42 pivoted back and forth about a horizontal axis x parallel to the frame plate 41, and a hollow support connected to the pivoting member 42 in a horizontally horizontal cantilevered manner. A frame 43, a pair of left and right support arms 44 extended downward from the support frame 43, and a chuck mechanism 45 which is an example of a film piece holding mechanism provided below each support arm 44, etc. ing.

A support shaft 46 integrally connected to the rotating member 42 is penetrated and supported by the frame plate 41, and the support shaft 46 projected from the back of the frame plate is transmitted to a reduction gear motor 47 mounted on the back of the frame plate 41. The wrapping is linked via 48. Then, along with the forward and reverse rotation of the motor 47, the chuck mechanism 45 extends along the arc locus s centered on the axial center x across the upper film piece receiving position and the lower film piece supply position. It is supposed to be moved.

The left and right chuck mechanisms 45 are provided on the inside of the tip of each of the left and right support arms 44 so as to face each other inward. The chuck mechanism 45 includes a pair of holding claws 49 that swing and open and close, and a drive case 50 that drives and opens and holds the holding claws 49 by an internal actuator such as an electromagnetic solenoid or a motor. Then, the turning member 42 is turned upward to move the chuck mechanism 45 to the film piece receiving position close to the back of the film piece forming unit 5. As a result, both end portions of the film piece f supported in the inclined posture toward the lower rear can be gripped by the holding claws 49 of the left and right chuck mechanisms 45 on the receiving plate 40 of the film piece forming portion 5.

Further, the rotating member 42 is turned downward to move the chuck mechanism 45 to the film piece supply position directly below, and the gripping claws 49 of the chuck mechanism 45 are opened to operate the film piece f held. Are opened on the article w at the packaging processing position P.

Here, when the chuck mechanism 45 is in the film piece receiving position, the holding surface by the pair of holding claws 49 is in the same downward and inclined posture as the film piece f on the receiving plate 40 of the film piece forming portion 5. . Further, when the chuck mechanism 45 is at the film piece supply position, the holding surface by the pair of holding claws 49 is in a horizontal posture in the front-rear direction, and the film piece f released by the opening of the holding claws 49 is horizontal in the front-rear direction. It is supplied to the upper surface of the article w while maintaining a proper posture.

In the release operation of the holding claws 49 of the chuck mechanism 45, that is, the release of the holding of the film piece f, the upper surface pressing member 63 of the film piece pressing mechanism 7 described later is supplied onto the article w at the packaging processing position P. It is performed after pressing the film piece f against the upper surface of the article w. Therefore, the film piece f supplied on the article w by the film piece transport mechanism 6 is released in a state of being pressed to a predetermined position on the upper surface of the article w by the upper surface pressing member 63 of the film piece pressing mechanism 7 It will be.

A detection piece 57 is attached to the rotation member 42, and a light sensor 59 whose light path is blocked by the detection piece 57 is attached to the support plate 58 attached to the frame plate 41. The rotation of the rotation member 42 is detected by the light sensor 59 to control the motor 47, and the operation range and the stop position of the chuck mechanism 45 are controlled.

Gluing portions n (see FIG. 8) are provided at both ends of the back surface of the film piece f. The upper and lower gripping claws 49 are formed in a wedge shape in which the tip end portion is a pinching portion in order to avoid the pasting portion n and clamp the chuck mechanism 45 at a position slightly inside the end portion. As a result, a space into which the end of the film piece f enters is formed in the inner back portion of the pinched portion of the closed gripping claw 49. Further, in order to cope with film pieces f of various specifications having different width, it is necessary to adjust the left and right positions of the chuck mechanism 45. For this reason, it is comprised as follows.

That is, as shown in FIG. 8, one operation shaft 51 is horizontally and horizontally supported over the entire length of the support frame 43 by the support frame 43 cantilevered horizontally from the rotating member 42 horizontally. A pair of left and right guide shafts 52 are disposed at the front and rear of the operation shaft 51 so as to be supported horizontally and horizontally. The guide shaft 52 is inserted into the movable frame 53 to which the support arm 44 is connected, and each movable frame 53 is guided and supported so as to move laterally along the 5 guide shaft 52, and the operation shaft 51 is screwed to each movable frame 53. Integrated.

The operation shaft 51 includes a left screw shaft 51a and a right screw shaft 51b opposite in lead angle, and can be turned by a handle 51c provided at one end thereof. Then, the left screw shaft 51a and the right screw shaft 51b are screwed through the left and right movable frames 53, respectively, and the left and right movable frames 53 are equally rotated by rotating the operation shaft 51 forward and reverse. The distance between the left and right chuck mechanisms 44 can be changed by moving them closer to or away from each other. By this, a suitable position can be held corresponding to the left and right length of the film piece f.

The frame plate 41 on which the film piece transport mechanism 6 is mounted is guided and supported by the apparatus frame 54 (see FIG. 2) so as to be movable up and down via a pair of front and rear vertical rails 55. By operating the handle 56a at the upper end to move the screw shaft 56 forward and backward, the frame plate 41 can be screwed up and down. By this, the height of the film piece feeding position in the film piece transport mechanism 6 can be adjusted according to the height of the article w. The print processing unit 4 and the film piece forming unit 5 are also supported by the frame plate 41. Regardless of the change in height of the frame plate 41, there is no change in the relative position between the film piece forming unit 5 and the film piece conveying mechanism 6, and film piece reception from the film piece forming unit 5 should be performed as expected. it can.

The detailed structure of the film piece pressing mechanism 7 disposed above the packaging processing position P is shown in FIG. 9 to FIG.

The film piece pressing mechanism 7 includes a drive case 60 connected to the frame plate 41, a pair of left and right support arms 61 vertically moved below the drive case 60 by the drive means incorporated, and a support connected to the front end of the support arm 61. A bracket 62, an upper surface pressing member 63 mounted on and supported by the support bracket 62, a side pressing member 64, and the like are provided.

The upper surface pressing member 63 presses the film piece f supplied on the article w at the packaging processing position P against the upper surface of the article, and is formed in a flat plate shape.

A pair of guide shafts 65 are provided upright on the front and rear of the upper surface pressing member 61, and a check control shaft 66 is provided upright on the front and rear center. The guide shaft 65 and the check control shaft 66 are inserted into the support bracket 62 so as to be vertically slidable, and the upper surface pressing member 63 can slide down by its own weight. Further, the lowering prevention collar 67 is fixed to the upper protruding end of the check prevention shaft 66 so that the upper surface pressing member 63 can be lowered by its own weight until the lowering prevention collar 67 abuts on the upper surface of the support bracket 62.

The side pressing member 64 pushes the left and right protruding portions of the film piece f downward and folds it down along the left and right side surfaces of the article w. The side pressing member 64 is formed in a block shape having a downwardly bent inner surface, and is connected to the lower side of the support bracket 62.

The rear portion of the support arm 61 having the support bracket 62 connected to the front is connected to the lower end of the pair of front and rear slide support shafts 69. The slide support shaft 69 is inserted and supported slidably in the upper and lower directions on a movable base 70 disposed movably to the left and right under the drive case 60, and the upper end of the slide support shaft 69 is connected to the movable block 71.

Further, on the upper part of the drive case 60, a crank arm 73 which is turned around a fulcrum point y which is horizontal by the speed reducer motor 72 is equipped. The upper end of the actuating link 74 is pivotally connected to the free end of the crank arm 73. At the lower end of the actuating link 74, a lifting and actuating shaft 75 is horizontally fixed in a horizontal direction. The movable blocks 71 on the left and right are loosely supported by the elevating operation shaft 75 so as to be slidable to the left and right.

Therefore, as the crank arm 73 pivots around the fulcrum point y, the elevating operating shaft 75 moves up and down, and the movable block 71 supported by the elevating operating shaft 75, the slide shaft 69, and the support arm 61 move up and down together. The upper surface pressing member 63 and the side pressing member 64 mounted on the front end portion of the support arm 61 via the support bracket 62 are moved up and down with a constant stroke.

The distance between the left and right upper surface pressing members 63 and the side pressing members 64 can be adjusted in accordance with the lateral width of the article w. That is, at the lower part of the drive case 60, a pair of front and rear guide shafts 76 and an operation shaft 77 are horizontally and horizontally supported. The guide shafts 76 are inserted into the left and right movable bases 70, and the movable bases 70 are guided and supported so as to be movable laterally along the guide shafts 76, and the operating shafts 77 are screwed through the movable bases 70. ing.

The operation shaft 77 is provided with a left screw shaft 77a and a right screw shaft 77b, and can be turned by a handle 77c provided at one end thereof. Then, the left screw shaft portion 77a and the right screw shaft portion 77b are screwed through the left and right movable bases 71, respectively, and the left and right movable bases 71 approach each other by rotating the operation shaft 77 forward and reverse. Alternatively, the distance between the left and right upper surface pressing members 63 and the side pressing members 64 can be changed and adjusted by moving away from each other.

The drive case 60 of the film piece pressing mechanism 7 is also mounted on the frame plate 41. By adjusting the frame plate 41 up and down, the film piece pressing mechanism 7 is adjusted to a height corresponding to the height of the article w, similarly to the print processing unit 4, the film piece forming unit 5, and the film piece conveyance mechanism 6. can do. Further, by the vertical adjustment of the frame plate 41, the article positioning mechanism 2 is also moved up and down, and the height of the positioning stopper 30 is adjusted.

The detailed structure of the film piece affixing mechanism 8 disposed below the packaging processing position P is shown in FIG. 12 to FIG.

The film piece affixing mechanism 8 is mounted on a support frame 80 disposed below a space formed between the rear end of the article carry-in mechanism 1A and the start end of the article carry-out mechanism 1B. The film piece affixing mechanism 8 includes a pair of left and right affixing members 81 disposed so as to be movable laterally and vertically, and a drive unit for laterally moving the same.

Each sticking member 81 is formed of an elastic roller surrounded by rubber or sponge having a suitable elasticity on the circumferential surface. The attaching member 81 is rotatably mounted on a support bracket 83 which is raised and lowered by an actuator 82 such as an air cylinder or an electromagnetic solenoid. Further, on the upper portion of the support frame 80, a pair of front and rear guide shafts 85 are fixed and disposed via the support base 84. Movable pedestals 86 are provided on the guide shafts 85 of each set so as to be slidable to the left and right, and the actuator 82 is supported by the movable pedestals 86.

Support shafts 86 a extended downward from the left and right movable bases 86 are extended downward through the left and right long holes 87 formed in the support base 84. A drive arm 88 is disposed at the left and right center of the support frame 80 so as to be rotatable around the vertical support point z. Both ends of the drive arm 88 and the support shaft 86 a are pivotally connected via a push-pull link 89. Further, the drive arm 88 itself is interlocked with a reduction gear motor 90 disposed below the support frame 80 via a crank link mechanism 91. As the drive arm 88 is reciprocated by a predetermined angle smaller than 180 degrees, the left and right movable bases 86 move close to each other and move away from each other with a predetermined stroke L.

Then, when the movable base 86 is in the standby position separated from each other, the left and right sticking members 81 are raised to the sticking action height corresponding to the placing and conveying level of the article w. When the movable platform 86 is in the sticking action position close to each other, the respective sticking members 81 enter under the article w and come into resilient contact with the bottom surface of the article w with an appropriate pressure.

The strapping and packaging apparatus according to the present embodiment is configured as described above, and the strapping and packaging processing process will be described below with reference to FIGS. 15 to 21.

(1) Before the article w reaches the packaging processing position P by the article loading mechanism 1A, the chuck mechanism 45 of the film piece transport mechanism 6 grasps near both ends of the film piece f at the film piece receiving position on the upper front. Hold by and stand by. Further, the positioning stopper 30 in the article positioning mechanism 2 on the article unloading mechanism 1B is operated to descend.

When it is detected by an optical sensor or the like that the article w conveyed by the article loading mechanism 1A has passed through the predetermined position, the support arm 44 is swung rearward and obliquely downward to move the chuck mechanism 45 to the lower film piece Move to the supply position. Just before the chuck mechanism 45 reaches the lower film piece feeding position, the conveyed article w is received by the positioning stopper 30. As a result, the article w is positioned and held at the packaging processing position P, and the conveyance of the article w by the respective belt conveyors of the article unloading mechanism 1B and the relay mechanism 1C is temporarily stopped. In addition, when it is detected by an optical sensor or the like that the preceding article w has passed through the predetermined position, the check stopper 28 of the article loading mechanism 1A protrudes into the article conveyance path and carries backward the subsequent article w being conveyed. Movement is blocked.

(2) As described above, when the article w is stopped at the packaging processing position P and the chuck mechanism 45 gripping the film piece f reaches the film piece supply position as shown in FIG. 15, the film piece pressing mechanism 7 is started. Based on the initial lowering operation of the support bracket 62 of the film piece pressing mechanism 7, first, as shown in FIG. 16, the upper surface pressing member 63 contacts the left and right two places of the film piece f, and the film piece f is made by its own weight. Lightly press on the top edge of the article w. When this pressing is performed, the gripping of the film piece f by the gripping claws 49 of the chuck mechanism 45 is released. As a result, the film piece f is pressed by the upper surface pressing member 63 on the upper surface near the front-rear center of the article w at the packaging processing position P with its both end side portions free.

Thus, the film piece pressing mechanism 7 can lightly press the film piece f against the upper surface of the article w by the own weight of the upper surface pressing member 63. For example, the pressing force against the article w is excessive due to the height of the article w. The film piece f can be pressed against the upper surface of the article w with a constant pressing force without causing pressure loss or lack of pressing force.

In the case of an article w whose back and forth length is short, since the transport belt 18 of the relay mechanism 1C is narrow, the article w on the transport belt 18 is not stable in the width direction. However, as shown in FIG. 16, the upper surface pressing member 63 of the film piece pressing mechanism 7 presses the left and right of the film piece f against the upper surface of the article w, and the gripping of the film piece f by the gripping claws 49 of the chuck mechanism 45 is released. In this state, the article w is supported at three points, ie, the conveyor belt 18 at the center of the bottom and the top pressing members 63 at the top and bottom, so that the posture can be stably maintained. The subsequent packaging process can be performed in this stably held posture.

(3) With the lowering operation of the support bracket 62, as shown in FIG. 17, the side pressing member 64 is lowered while pressing the film piece f on the article w by the weight of the upper surface pressing member 63. As a result, only the left and right side pressing members 64 are lowered to a predetermined position, and both end side portions of the film piece f protruding outward from the article w are pushed downward, as shown in FIG. Down along both shoulders and sides of the

At the same time, the support arm 44 of the chuck mechanism 45 having released the gripping of the film piece f by the gripping claws 49 swings forward and upward and returns to the film piece receiving position. When it is detected by an optical sensor or the like that the article w conveyed by the article loading mechanism 1A has passed through the predetermined position, the film piece forming unit 5 is activated to place one film piece f on the receiving plate 40. Sent out.

(4) Next, as shown in FIG. 19 and FIG. 20, the film piece affixing mechanism 8 is activated, and the left and right affixing members 81 that have been waiting laterally outward under the article conveyance path advance horizontally. It moves to the sticking action position where it enters below the article w. As a result, the film piece f hanging downward from the article w is pushed by the attaching member 81 and wound up to the bottom surface of the article w, and the glued portions n at both ends of the film pieces are elastically attached to the bottom surface of the article w It is pressed and stuck.

In the transport belt 18 of the relay mechanism 1C, as shown in FIG. 20, the left and right adhesion members 81 move to the adhesion action position below the article w, and both side portions of the film piece f It has a narrow width that does not hinder the application.

(5) Next, when the winding and sticking of the film piece f is completed, as shown in FIG. 21, the actuator 82 is shortened and the sticking member 81 is slightly lowered and separated from the bottom surface of the article w. Then, the film 82 is retracted backward without touching the stuck film piece f, and the actuator 82 is extended at the standby position, and the sticking member 81 is returned and raised to the original height.

(6) Further, with completion of winding and sticking, the positioning stopper 30 on the article unloading mechanism 1B is lifted and retracted, and the film piece pressing mechanism 7 is lifted and returned, and the banded packaged article w (FIG. The transport of the article w by the respective belt conveyors of the article unloading mechanism 1B and the relay mechanism 1C is resumed and is carried out to the rear. At the same time, the check stopper 28 of the article loading mechanism 1A withdraws from the article conveying path, and conveys the subsequent article w to the rear packaging processing position P. The positioning stopper 30 on the article unloading mechanism 1B is lowered again when the band-wrapped article w passes.

As described above, one banding packaging is completed, and the above process is repeated each time a new article w is delivered.

According to this embodiment, between the article loading mechanism 1A and the article unloading mechanism 1B at the packaging processing position P, the relay mechanism 1C can receive and support the article w to be transported from below, and transport it. As in the prior art, the leading end of the article w transported by the article loading mechanism 1A does not fall into the gap between the article loading mechanism 1A and the article unloading mechanism 1B, even if the article is not sandwiched and transported vertically. Transfer to the article delivery mechanism 1B is smoothly performed. Therefore, it is not necessary to provide the upper transport belt 12 as in the prior art shown in FIGS. 24 to 27 above.

Since the article w can be transported by the relay belt conveyor of the relay device 1C, even if the article has a short front-back length, it can be smoothly carried into the packaging processing position P by the relay belt conveyor or the packaging processing position It can be carried out smoothly from P.

In addition, since the transport belt 18 of the relay device 1C is a narrow belt that receives and supports the central portion in the width direction of the bottom surface of the article w and transports it, the sticking member 81 of the film piece sticking mechanism 8 The lower part of w is moved so that both ends of the film piece f are not wound around and stuck to the bottom of the article w.

[Other embodiments]
The present invention can also be implemented in the following forms.

(1) The relay mechanism 1C may be driven independently of the article unloading mechanism 1B. In this case, the belt conveyor for relay of the relay mechanism 1C is stopped during the strapping process, and when the packaging process is completed, the belt conveyor for relay of the relay mechanism 1C and the belt conveyor for unloading of the article unloading mechanism 1B The drive control may be performed synchronously.

(2) In the case where only the article w with a front-to-back length sufficiently larger than the distance between the end of the loading belt conveyor of the article loading mechanism 1A and the start of the unloading belt conveyor of the article unloading mechanism 1B is to be packaged Then, the article w is supported over the end of the belt conveyor for loading the article loading mechanism 1A and the start end of the unloading belt conveyor for the article unloading mechanism 1B and is subjected to banding and packaging processing. In this case, instead of the conveyor belt for the relay, as shown in FIG. 23, the relay device 1C ₁ consisting of narrow relay support base 95 having a width for drop prevention, and the end of the conveyor belt 10 of the article loading mechanism 1A, it may be fixed deployed to the right and left central portion of the distance between the starting end of the conveyor belt 15 of the article delivery mechanism 1B _1.

(3) The article loading mechanism 1A and the article unloading mechanism 1B may be provided by arranging a large number of narrow conveyance belts in parallel at a small interval in the conveyance width direction.

DESCRIPTION OF SYMBOLS 1A article loading mechanism 1B article unloading mechanism 1C relay mechanism 2 article positioning mechanism 6 film piece conveying mechanism 7 film piece pressing mechanism 8 film piece sticking mechanism 18 conveyance belt 62 support bracket 63 top pressing member 64 side pressing member f film piece P Packaging processing position w goods

Claims

An article loading mechanism for transporting articles toward a packaging processing position;
A film transport mechanism for transporting a strip of film over the article at the packaging processing position;
A film piece pressing mechanism for pressing the film piece transported onto the article against the article at the packaging processing position and pressing down both end portions of the film piece;
A film piece affixing mechanism for winding and sticking both end portions of the film piece that has been pushed down to the bottom surface of the article;
An article delivery mechanism for taking out the article on which the film piece is wound and attached from the packaging processing position;
And a relay mechanism for receiving and relaying the articles transported from below from the lower side of the article loading mechanism to the article unloading mechanism.
The packaging processing position is set between the article loading mechanism and the article unloading mechanism,
The relay mechanism receives and supports the article at a central portion in a width direction orthogonal to the conveyance direction of the article.
Band strap packaging device.
The relay mechanism includes a relay belt conveyor for transporting the article;
The relay belt conveyor has a narrow conveying belt that supports the central portion in the width direction.
A banding packaging apparatus according to claim 1.
The article unloading mechanism comprises an unloading belt conveyor,
In the relay belt conveyor, the narrow conveyor belt is wound around a pulley of the unloading belt conveyor and driven by the unloading belt conveyor.
The strapping packaging device according to claim 2.
The article loading mechanism comprises a loading belt conveyor,
A support plate for receiving and supporting the article from below is provided between the loading belt conveyor and the relay belt conveyor.
The strapping packaging device according to claim 3.
The film piece pressing mechanism includes an upper surface pressing member for pressing the film piece against the upper surface of the article by its own weight, and both end sides of the film piece pressed against the upper surface of the article by the upper surface pressing member And a side pressing member pressing down
The strapping packaging device according to any one of claims 2 to 4.
The film piece pressing mechanism includes a support bracket that moves up and down,
The side pressing member is connected and fixed to the support bracket,
The upper pressing member is vertically movably supported by the support bracket by its own weight.
The upper pressing member approaches the upper surface of the article prior to the side pressing member as the support bracket is lowered.
The strapping packaging device according to claim 5.
The upper surface pressing member of the film piece pressing mechanism presses the film piece to both sides in the width direction of the upper surface of the article.
The strapping packaging device according to claim 5.